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Through expert code examples and crystal-clear explanations, Henderson and Wood reveal how Swift features improve on Objective-C and show how to make the most of them. You’ll quickly master “Swift-er” techniques for using objects, classes, optionals, generics, functions, closures, and more. Each chapter includes hands-on exercises designed to reinforce and deepen your skills.
You’ll learn how to re-implement common Objective-C programming solutions in Swift, improving code clarity, power, and performance on both desktop and mobile devices. And, because you probably won’t (or can’t) abandon Objective-C anytime soon, you’ll discover how to use both languages together, smoothly integrate Swift into existing projects and workflows, and gradually move your current code base into the future. Coverage includes
- Using Swift’s new patterns and concise, expressive syntax to produce safer, more reliable code
- Leveraging the surprising power of Swift’s data structures
- Utilizing Swift’s type system to help prevent errors common in other languages
- Using optionals to correctly handle invalid, missing, or unknown values
- Implementing generics to reduce duplication, improve power, and simplify maintenance
- Interacting with C and Objective-C APIs
- Abstracting functionality for reusable code while maintaining type safety
- Isolating code in clean, flexible, low-overhead closures
- Combining Swift with Objective-C in the same project
- Avoiding gotchas when importing Objective-C classes in Swift projects
- Nesting types to improve code clarity
- Creating shared objects with singletons
- Managing threading and concurrency with Swift’s advanced Grand Central Dispatch (GCD) patterns
